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# Security
## Threat Model
### Overview
OpenCode is an AI-powered coding assistant that runs locally on your machine. It provides an agent system with access to powerful tools including shell execution, file operations, and web access.
### No Sandbox
OpenCode does **not** sandbox the agent. The permission system exists as a UX feature to help users stay aware of what actions the agent is taking - it prompts for confirmation before executing commands, writing files, etc. However, it is not designed to provide security isolation.
If you need true isolation, run OpenCode inside a Docker container or VM.
### Server Mode
Server mode is opt-in only. When enabled, set `OPENCODE_SERVER_PASSWORD` to require HTTP Basic Auth. Without this, the server runs unauthenticated (with a warning). It is the end user's responsibility to secure the server - any functionality it provides is not a vulnerability.
### Out of Scope
| Category | Rationale |
| ------------------------------- | ----------------------------------------------------------------------- |
| **Server access when opted-in** | If you enable server mode, API access is expected behavior |
| **Sandbox escapes** | The permission system is not a sandbox (see above) |
| **LLM provider data handling** | Data sent to your configured LLM provider is governed by their policies |
| **MCP server behavior** | External MCP servers you configure are outside our trust boundary |
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# Reporting Security Issues
We appreciate your efforts to responsibly disclose your findings, and will make every effort to acknowledge your contributions.
To report a security issue, please use the GitHub Security Advisory ["Report a Vulnerability"](https://github.com/anomalyco/opencode/security/advisories/new) tab.
The team will send a response indicating the next steps in handling your report. After the initial reply to your report, the security team will keep you informed of the progress towards a fix and full announcement, and may ask for additional information or guidance.
## Escalation
If you do not receive an acknowledgement of your report within 6 business days, you may send an email to [email protected]
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